Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Accuracy of the 10-mm cyclone for sampling respirable coal mine dust.

Authors
Bartley-DL; Bowman-JD; Breuer-GM; Doemeny-LJ
Source
Aerosols in the mining and industrial work environments, Vol. 3, instrumentation. Marple VA, Liu-BYH, eds., Ann Arbor, MI: Ann Arbor Science, 1983 Jan; 3:897-906
Link
NIOSHTIC No.
00151078
Abstract
The accuracy of a 10 millimeter (mm) cyclone for sampling respirable coal mine dust was evaluated. An empirical mathematical model was developed to assess cyclone performance in terms of the parameters, flow rate-Q and calibration constant-k. Q-value and k-value were selected to give the best estimates of respirable dust concentrations as defined by the British Medical Research Council (MRC) criterion. This was done by introducing a function to create a non weighted least squares fit of a cyclone transmitted representative mass distribution to the corresponding MRC respirable mass distribution. Input consisted of monodisperse cyclone collection efficiency data. This resulted in a computed Q-value of 1.2 liters per minute as the flow rate that would maximize performance. A cyclone penetration experiment was conducted with Mine Safety Administration sampling units using a fluorescein tagged aerosol at the suggested flow rate Q-value of 1.2 liters per minute. Using the resulting experimental curve, the optimum k-value was computed to be 0.91. The authors conclude that the optimizing parameters for the 10mm cyclone are Q-value 1.2 liters per minute and k-value 0.91.
Keywords
Coal-dust; Miners; Breathing-zone; Pulmonary-clearance; Lung-irritants; Respiration; Pulmonary-disorders; Breathing; Pulmonary-system; Inhalants; Exposure-methods
Publication Date
19830101
Document Type
Book or book chapter
Editors
Marple-VA; Liu-BYH
Fiscal Year
1983
NTIS Accession No.
NTIS Price
ISBN No.
9780250405978
NIOSH Division
DPSE
Source Name
Aerosols in the mining and industrial work environments, Vol. 3, instrumentation
State
OH
TOP